> For the complete documentation index, see [llms.txt](https://docs.flowiseai.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.flowiseai.com/integrations/langchain/document-loaders/folder.md).

# Folder

<figure><img src="/files/Bkc47xfk9x32pXigPNTS" alt="" width="262"><figcaption><p>Folder with Files Node</p></figcaption></figure>

The Folder Loader provides functionality to load and process multiple files from a directory. This module supports a wide range of file formats and can recursively process subdirectories.

This module provides a sophisticated folder loader that can:

* Load multiple file types simultaneously
* Process directories recursively
* Handle various document formats
* Support PDF-specific processing
* Process structured data files
* Customize metadata extraction
* Support text splitting

## Inputs

### Required Parameters

* **Folder Path**: Path to the directory containing files
* **Recursive**: Whether to process subdirectories

### Optional Parameters

* **Text Splitter**: A text splitter to process the extracted content
* **PDF Usage**: Choose between:
  * One document per page
  * One document per file
* **JSONL Pointer Extraction**: Pointer name for JSONL files
* **Additional Metadata**: JSON object with additional metadata
* **Omit Metadata Keys**: Comma-separated list of metadata keys to omit

## Outputs

* **Document**: Array of document objects containing metadata and pageContent
* **Text**: Concatenated string from pageContent of documents

## Supported File Types

### Documents

* PDF (.pdf)
* Word (.doc, .docx)
* Excel (.xls, .xlsx, .xlsm, .xlsb)
* PowerPoint (.ppt, .pptx)
* Text (.txt)
* Markdown (.md, .markdown)
* HTML (.html)
* XML (.xml)

### Data Files

* JSON (.json)
* JSONL (.jsonl)
* CSV (.csv)

### Programming Languages

* Python (.py, .python)
* JavaScript (.js)
* TypeScript (.ts)
* Java (.java)
* C/C++ (.c, .cpp, .h)
* C# (.cs)
* Ruby (.rb, .ruby)
* Go (.go)
* PHP (.php)
* Swift (.swift)
* Rust (.rs)
* Scala (.scala, .sc)
* Kotlin (.kt)
* Solidity (.sol)

### Web Technologies

* CSS (.css)
* SCSS (.scss)
* LESS (.less)
* SQL (.sql)
* Protocol Buffers (.proto)

## Features

* Multi-format support
* Recursive directory processing
* PDF processing options
* Structured data handling
* Text splitting support
* Metadata customization
* Error handling

## Notes

* Automatically detects file types
* Handles large directories
* Preserves file metadata
* Memory-efficient processing
* Supports custom file extensions
* Error handling for invalid files
* Flexible output formats